WINWALL TECHNOLOGY PTE.LTD was founded in 1992 in Singapore. It is a leading third-party testing and certification agency in Asia for building façades and enclosures systems. The company holds SAC accreditation from Singapore and its test reports are internationally recognized. WINWALL specializes in providing authoritative testing and technical services for the airtightness, water resistance, wind pressure resistance, structural safety, and fire performance of façades, windows, and enclosures. With over a thousand projects completed, the company’s business covers Singapore, Malaysia, Vietnam, India, China, and other countries and regions. WINWALL also has a joint venture laboratory in India, offering reliable third-party performance validation and safety assurance for global construction projects through its expertise and rigorous services.

GZ DP Anechoic Co., Ltd. is composed of a team of acoustic experts and engineers with years of experience in acoustic technology research and application. The company owns office buildings and factories, with an acoustic laboratory that meets CNAS standards, enabling them to monitor their product’s acoustic performance and provide external acoustic testing services. Through continuous innovation and hard work, GZ DP has developed high-precision, environmentally friendly, durable, aesthetically pleasing, and technologically advanced acoustic laboratory products. GZ DP’s affiliated company, GZ DP Acoustic Technology Research Co., Ltd., is a high-tech company specializing in the research and development of acoustic testing instruments. The seamless integration of GZ DP’s acoustic environments with GZ DP’s testing instruments enables them to offer complete solutions for acoustic laboratories.

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1. Project Scope

Airborne Sound Insulation Laboratory;

2. Applicable Standards

(1) Acoustic ASTME90-09 (Reapproved 2016)

(2) GBT 19889.1-2005 Acoustics — Measurement of sound insulation of buildings and building elements — Part 1: Requirements for laboratory test facilities with suppressed lateral sound transmission;

(3) GBT 19889.3-2005 Acoustics — Measurement of sound insulation of buildings and building elements — Part 3: Laboratory measurements of airborne sound insulation of building elements.

3. Main Specifications and Project Content

(1) Clear Dimensions of the Airborne Sound Insulation Room - Sound Source Room: Length (L) × Width (W) × Height (H) = 6.0m (L) × 5.0m (W) × 4.5m (H), Volume (V) ≈ 137.07m³.

(2) Clear Dimensions of the Airborne Sound Insulation Room - Receiving Room: Length (L) × Width (W) × Height (H) = 6.0m (L) × 4.0m (W) × 4.5m (H), Volume (V) ≈ 110.34m³.

(3) Environmental Noise: Len（A）≤65dB(A)，Background Noise：Lgn(A)≤30dB(A).

(4) Sound Source Room Soundproof Door: Width (W) × Height (H) = 1.5m × 2.0m.

(5) Receiving Room Soundproof Door: Width (W) × Height (H) = 1.0m × 2.0m.

(6) Test Opening Size: S=14.4㎡.

(7) Maximum Lateral Sound Insulation:ΔLp≥55dB(A).

(8) This acoustic laboratory is capable of conducting tests on specimens with STC 55.

4. Contact Information

International：+65 91016778

WhatsApp: +6011 5135 5819

Phone: 400-682-3698

Email: info@thunderstar.sg

For more information, please feel free to contact us.